Nexen is investing $400-million in an existing oilsands project southeast of Fort McMurray.

The Calgary-based company, a wholly-owned subsidiary of CNOOC limited, announced Tuesday they’re adding 26, 000 barrels per day of production from three well pads that will be tied-in to its existing Long Lake facility.

“Through this project, we will bring into production a meaningful number of lower steam-to-oil ratio wells, significantly improving Long Lake's GHG performance.”